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Surface location error in robotic milling: Effect of combined low frequency and high frequency vibration modes
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Kinetic assessment of pulp mill-derived lime mud calcination in high CO 2 atmosphere
The chemical pulping of biomass involves the recycling of calcium through the calcination of lime mud, which is mostly comprised of calcium carbonate (CaCO 3 ). Lime mud decomposes under elevated temperatures to generate calcium oxide (CaO) and carbon dioxide (CO 2 ), the kinetics of which are strongly influenced by the CO 2 partial pressure and temperature. Oxy-fuel combustion and electrified lime kilns for lime mud calcination are intriguing methods to decarbonize this highly polluting operation within the biomass pulping industry. However, the high CO 2 concentration in oxy-fuel and electrified calcination processes alters the kinetics and overall reactivity of lime mud. For the first time, a model-fitting method is used to determine the kinetic parameters for lime mud calcination under a wide range of temperatures (550 °C–1250 °C) and under different concentrations of CO2 (0 %, 15 %, 50 %, and 90 %). A kinetic model is developed that accurately predicts the reaction rates as a function of temperature and CO 2 concentration. The apparent activation of energy for lime mud calcination is elevated under a high CO 2 environment. Relative to inert gas (N 2 , Ar), the temperature window for calcination is much smaller under high CO 2 environments. The presence of Na in lime mud does not seem to affect calcination under a high CO 2 environment. Finally, particle size variation does not have a significant effect on calcination under a high CO 2 environment.
Characterization of paper mill sludge as a renewable feedstock for sustainable hydrogen and biofuels production
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Evaluation of the polymorphic forms of ritonavir and lopinavir in raw materials and co-milled systems
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Modeling evaluation of the impact of residual source material on remedial time frame at a former uranium mill site
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Radon fluxes at four uranium mill tailings disposal sites after about 20 years of service
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Effect of cryogenic milling on the mechanical and corrosion properties of ODS Hastelloy-N
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Non-perturbative defect one-point functions in planar N = 4 super-Yang-Mills
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Effects of particle size, distribution, and morphology on bulk shear behavior of milled loblolly pine
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